{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["GENE"], "input": "RT - PCR indicated that p21 mRNA was induced 1 . 4 - , 2 . 0 - , and 3 . 1 - fold in the 2 - day neonatal , 7 - day neonatal , and adult stages , respectively , compared to the 17 - day fetal stage ."}
{"GENE": ["p21 mRNA"]}